Magazine tack-hammer



{in modem A 2 Sheets-Sheet 1.

A. T. LEWIS. MAGAZINE TACK HAMMER. No. 472,374. Patented Apr. 5, 1892.

A TTORNE YS (No Model.) .2 Sheets8heet 2.

A. T. LEWIS. MAGAZINE TACK HAMMER.

No. 472,374. Patented Apr. 5.1892.

INVENTOFI' 1 W/TNE SSE S A TTOENE rs UNITED, STATES PATENT -FFICE.

ANDREYV T. LEWIS, OF EAST PORTLAND, ASSIGNOR TO HIMSELF, AND FREMONT O.DOWNING, OF PORTLAND, OREGON.

MAGAZI N E TACK-HAM M ER.

SPECIFICATION forming part of Letters Patent No. 472,374, dated April 5,1892.

Application filed March 11, 1891. Serial No. 384,531. (No model.)

To all whom it may concern.-

Be it known that I, ANDREW T. LEWIS, of East Portland, in the county ofMultnomah and State of Oregon, have invented a new and the tacks one byone to a striking-face of thehammer, and also to provide mechanism forreleasing the tack the moment it is introduced into the surface in whichit is to be driven.

'lheinvention consists in the novel construction and combination of theseveral parts, as will be hereinafter fully set forth, and pointed outin the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar figures and letters of referenceindicate corresponding parts in all the views.

Figure l is a central longitudinal section through the hammer, the partsbeing in their normal position. Fig. 2 is a side elevation of thehammer, partly in section, illustrating a tack held in position to bedriven. Fig. 3 is a bottom plan view of one striking-surface of thehammer-head. Fig. 4 is a plan view of the hammer, a portion of the coverbeing broken away, and likewise the flanges adapted to support the tacksin the magazine of the hammer. Fig. 5 is a transverse section on theline 5 5 of Fig. 4. Fig. 6 is a similar section on the line 6 6 of Fig.4:. Figs. 7 and 8 are perspective detail views of the mechanismcontained in the hammer-head and a portion of the mechanism foroperating the same. Fig. 9 is a plan view of a portion of themagazine-rack. Fig. 10 is a partial vertical enlarged section of one endof the hammer-head. Fig. 11 is a front elevation ,of the partillustrated in Fig. 10, and Fig. 12 is a perspective view of one of theguide-arms detached.

A handle A has an attached head B, the hammer and its head beingessentially T- shaped. The handle A isprovided with a verticallongitudinal slot 10,which extends through from the top to the lowerface, and in the upper face of the slottled surface of the handlealongitudinal channel 11 is formed at each side of the slot by recessingthe upper outer side surface of thehandle, and side plates attached tothe handle are bent inward to form horizontal flanges 10, as bestillustrated in Fig. 5. The heads of the tacks to be used are adapted torest upon these flanges, and their body portions extend downward intothe slot 10, this portion of the handle being constructed to constitutea tack-magazine, as is best illustrated in Fig. 5. The slot 10 of thehandle and likewise the channels 11 are preferably covered by acap-plate 12, forming a cover for the magazine and hinged at one end tothe solid end of the handle, as shown in Fig. 1. which cap is usuallyprovided at its upper end with downwardly-curved spaced springextension-plates 12, as illustrated in Fig. 6. The slot 10 virtuallyintersects a longitudinal chamber 13, produced in the head of the hammerand extending from a point preferably near the center, through one endsurface thereof, the remaining portion of the hammer-head being solid.

By producing the channels 11 in the handle two longitudinal shoulders14: and 15 are formed, the shoulder 14: being of greater height'than theshoulder 15, and upon the upper faces of the shoulders racks 16 and 17are located, the opposed faces of the said racks being provided with aseries of teeth a, alternating with a series of recesses a. As oneshoulder is higher than the other, one rack extends over the other, andthe inner side surfaces of the racksare inengagement, as shown in Fig.5. The rack 16, which is the lower one, is stationarythat is, it isincapable of move ment longitudinally of the handle. 17, however, iscapable of such movement, and this is brought about through a connection with a lever D, fulcrumed in the lower portion of the slot 10 nearthe solid section of the handle, as illustrated in Fig. 1, theconnection being effected through the medium of an arm 18, curved upwardfrom the lever, and a link 19. The lever from its fulcrum is carrieddownward, forming a handle-section d, to which the arm 18 is secured,and the said handle is normally pressed downward by a spring 2.0 bearingagainst the inner face The rack' thereof, the said spring being attachedto the solid portion of thehandle. Both of the racks 16 and 17 arecurved downward at the end of the handle, the curved end of the movablerack being of spring metal, and the stationary rack 16 is of greaterlength than the movable rack. Ordinarily the difference in lengthbetween the two racks is that of a tooth, as illustrated in Fig. 6. Theracks 16 and 17 are located beneath the handle-flanges 10.

In operation when the movable rack is reciprocated at each forward movement thereof a tack will by engagement with one of its teeth be movedforward the distance of one notch in the stationary rack, as the tacksare placed, as hereinafter stated, with their heads resting upon theflanges 10, and the body portions of the tacks extend downward throughthe recessed portions of the racks into the slot 10 of the handle.

The side of the chamber13 in the hammerhead facing the handle islongitudinally slotted, the slot extending the full length of thechamber, and within the chamber 13 a follower-block Gis located,(illustrated in detail in Fig. 7,) which block consists of a back plateI) and two parallel flanges b, located one at each side edge of theracks and extending forwardly at a right angle thereto, producingthereby a vertical channel 11 In each side flange at the top of thefollower-block a vertical slot b is produced, and near the lower endsemicircular transverse slots b are formed, the upper slots Z) being intransverse alignment, and also the lower slots 1). The lower ends of theside flanges Z) are enlarged and circular, the circle of the enlargementbeing a continuation of the radius upon which the slots 1) are formed,the enlarged portion of the follower commencing at the base-wall of thesaid slots. The circular lower portions b of the follower have circulardepressions U produced in their outer side faces, and in said depressedfaces aligning vertical slots 6 central apertures b and lower aperturesb are formed. The forward edges of the flanges b of the follower-blockare concaved from the top down in direction of the semicircular slots 11The follower-block normally fits neatly into the chamber 13 of the hammer-head, which is essentially rectangular in cross-section,and theenlarged circular portions b of the follower project outward through theslot in the side wall of the chamber.

A pin 22 is passed diametrically through the chambered portion of thehammer-head, which pin when the follower is in its normal positionwithin the chamber extends through the upper slot b of the followeralmost in engagement with the base-wall thereof, and the movement of thefollower-block in the chamber is limited by passing a pin 23diametrically through the lower portion of the chambered surface of thehammer head and through the elongated vertical slot in the follower.

The upper end of a guide-arm 24: is secured in the upper forward portionof the channel 0 of the follower, the contour of the arm correspondingto the forward-edge contour of the follower, and the lower end of theguidearm is secured in the follower-channel Z) by passing a pin throughthe aperture 1)" of the follower and a suitable aperture in theguidearm. Thus the guide-arm and the follower are rendered integral toall practical purposes. The thickness of the guide-arm is preferablyslightly less than the width of the channel b A trip-arm 25 is alsolocated in the follower-channel, and it practically conforms to theshape of the forward edge of the follower, the lower end of the armbeing pivotally attached to the lower portion of the follower by passinga pintle through the apertures Z) of the latter. The upper end of thetrip-baris unattached and rests normally against the pin The extremeupper edge of the trip-arm is forwardly bent, as illustrated at d inFigs. 1 and S, and the said arm is normally held in engagement with thepin 22 by a spring 26, located at the upper inclined portion and havinga bearin g against the inner edge of the guide-arm. Below the spring thetrip-arm is further provided with a knob or projection 27 upon its outeredge.

Retaining-arms E are pivoted to the sides of the enlarged lower end ofthe follower. The arms consist of angular body portions 28, which arepivoted upon the outer ends of the pintle pivoting the lower end of thetriparm 25, and the bodyseetions are so formed that the major portionsthereof readily turn in the depressions l) in the follower. One end ofthe body-sections of the retaining-arms is slotted to receive the endsof the pin 23, as shown best in Fig. 10, and the body portions of theretaining-arms at their opposite ends are curved upward and outward, soas to extend over the circular forward edges of the follower, as is bestshown in Fig. 11, and to the inwardly-extending ends of thebody-sections of the arms downwardly-curved members 29 are secured orare made integral therewith, the said members being concentric with thecurved edge surfaces of the enlarged lower portions of the follower.

The lever D from itspivotal point extends within the slot 10 of thehandle almost to the outer end thereof, at which point the lever isbifurcated and shaped to form two upwardly and outwardly extendingmembers 30 and 31, one of which members is located at each side of thehandle. The members at their upper ends are connected by apin 32,andupon said pin two downwardly extendin g parallel plates are secured,preferably of greater width at their bottoms than at their tops, thesaid plates being connected at the front and back of their bottomsurfaces by transverse bars St. The connected plates virtually act inthe capacity of a dog and will be hereinafter described.

Two spring-arms and 36 are located in front of the side slot of thehead-chamber 13 and extend downward one on each side of the guide-arm24, fixed to the follower. The spring-arms 35 and 36, however, do notproject downward as far as the bottom of the follower, and their upperends are secured in any suitable or approved manner to the curved lowerends of the handle-flanges 10 .or are integral therewith.

It is necessary that both of the racks 16 and 17 should have a lateralmovement and that when pressed upward from each other they should bereturned to their normal position at a given time, and in order toaccomplish this result the racks are supported in spring-cushions, whichconsist of spring-bars 37, secured to the walls of the channels 11 ofthe handle at one end, as best shown in Fig. 4, the free ends of whichspring-bars have clamps or sockets 38 formed thereon, which clamps orsockets embrace the sidelongitudinal edges of the racks.

In operation the cover 12 I is lifted and tacks are placed between theopposed recessed surfaces of the racks 16 and 17, so that their pointswill extend downward, as shown in Fig. 1, and their heads will rest uponthe upper surface of the handle-flanges 10, as shown in Fig. 5. Whentacks have been placed in all of the recessed surfaces, the cover 12 maybe closed. By pressing down the handle-section cl of the lever Dthebifuroated end of the lever is drawn downward, and the forward edge ofthe dog carried by the bifurcated end of the lever will engage with thehead of the last tack, as shown in Fig. 1, and will press the said tackdownward between the spring-arms 35 and 36 and the guide-arms 24, theshank of the tack being horizontally located beneath the handle, and asthe dog is forced downward its opposite end engages with the knob 27upon the triparm and forces the said arm downward until its inclinedsurface at is brought to an engagement with the pin 22, whereupon thetrip-arm is enabled to drop backward out of the path of the dog and thedog may continue its downward movement. As the dog is carried fartherdownward it carries the tack with it, and the engagement of the dog withthe trip-arm will force the follower vertically downward the length ofits slot 19 as shown in Fig. 2, and as the follower moves downward byreason of the pin connection between the said follower and theretaining-arms the arms are forced downward also to the position shownin dotted lines, Fig. 10. In the meantime the dog engaging with the tackwill have carried it downward below the ends of the springs 35 and 36,and as the retaining-arms are forced downward the dog carries the tackdownward with the arms, and when the tack has been forced to theextremity of the retaining-arms the pin 32, to which the dog isattached, will engage with the body-surface of the retaining-arms andthe further movement downward of the bifurcated end of the lever will beimpossible. The lever D is then released before any stroke is made withthe hammer and tack in position, and the spring 20 acts to restore thelever to its normal position, as in Fig. 1. The dog is carried back andunder the 'tack which has taken the same position the tack at the end ofthe follower had before the downward movement of the lever. The dog isenabled to sink back at this point when the follower is out, as in Fig.2. When the follower is back in normal position, the dog is pressedforward by the trip-arm upon pin 22, and is in position for pressingtacks out, as before. The spring 26 presses the trip-arm at its curvedend against pin 22 and holds the follower firmly out, as in Fig. 2, andthe spring 26 also acts to hold the follower in position, as in Fig. 1.The tack, as in Fig. 2, is now held in position to be driven into thefloor, wall, or other surface, with the exception that the lever D is inposition, as in Fig. 1. A hard stroke may be made, or a strokesufficient to drive all parts back into position, as in Fig. 1, and themoment the tack is thus introduced the force of the blow restores theparts in the hammer-head to their normal position, thus freeing thetack-head from engagement with the follower and the retaining-arms. Thehammer is then used for driving, as an ordinary hammer.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. A tack-hammer provided with a magazine,tack-supports and tack-feed racks within the magazine, and a mechanism,substantially as described, for reciprocating one of the racks, asandfor the purpose set forth.

2. In a tack-hammer, the combination,with a handle provided with amagazine and a chambered head, of tack-receiving racks located in themagazine, one of which is capable of longitudinal movement, both of theracks being curved downward to the chamber in the head, as and for thepurpose set forth.

3. In a tack-hammer, the combination, with a handle provided with amagazine and a head provided with a chamber communicating with amagazine, of tack-receiving racks located in the magazine and curveddownward at one end in direction of the hammerhead chamber,spring-cushions located at the sides of the racks, and a lever connectedwith one of the racks, whereby the said rack is given a longitudinalmovement, as and for the purpose specified.

4. In a tack-hammer, the combination, with a handle provided with amagazine, a head having a chamber therein communicating with themagazine and a follower-block located within the head-chamber and havinga limited downward movement, a guide-arm attached to one edge of thefollower, and springarms attached to the handle at each side of theguide-arm, of tack-receiving racks located within the magazine of thehandle, both capa- 4 erasva ble of side movement and having their endscurved downward, one of said racks being provided with a spring-sectionat its curved end, springs bearing against the edges of the racks, and alever connected with one of the racks and adapted to impart thereto endmovement, as and for the purpose specified.

5. In atack-hammer, the combination, with a handle provided with amagazine, a head having a chamber therein communicating with themagazine, a follower-block located in the chamber of the head, having alimited downward movement, a guide-arm attached to the edge of thefollower facingthe handle, spring-arms projected downward from thehandle in front of the guide-arm, and a triparm having a pivotalconnection with the follower at its lower end and located within thefollower, of tack-receiving racks located in the magazine of the handle,both racks being capable of side movement and having one end curveddownward and one capable of a 1ongitudinal movement, one of said rackshaving a springsection at its curved end, springs bearing against thesides of the racks, a spring-pressed lever, a connection between thelever and one of the racks, whereby the said rack is moved lengthwise,and a dog connected with the lever, adapted for engagement with thetrip-arm and also with the lowermost tack located in the rack, as andfor the purpose specified.

6. In ataek-hammer, the combinatiomwith a handle provided with amagazine, a head having a chamber therein communicating with themagazine, a follower-block located in the chamber of the head, having alimited downward movement, a guide-arm attached to the edge of thefollower facing the handle, spring-arms projected downward from thehandle in front of the guide-arm, and a triparm having a pivotalconnection with the follower at its lower end and located within thefollower, of tack-receiving racks located. in the magazine of thehandle, both racks being capable of side movement and having one endcurved downward between the springarms and the guide-arm of thefollower, springs bearing against the sides of the racks, aspring-pressed lever, a connection between the lever and one of theracks, whereby the said rack is moved lengthwise, a dog connected withthe lever, adapted for engagement with the trip-arm and also with thelowermost tack located in the rack, and spring retaining arms pivoted tothe lower portion of the follower, the said arms being adapted upon thedownward movement of the follower to extend beneath it a slight distancefrom its lower surface, as and for the purpose set forth.

ANDRE T. LE\VIS.

Witnesses:

F. L. KEENAN, It. P. CHAMBERS.

